Slitting device



J. A. CAMERON ET AL sLITTn aG DEVICE Aug. 28, 1923. 3,465,965

Filed March 19 1919 2 Sheets-Sheet 1 J) W v Ina enter. JZzmes .fl: fi'amenm/ Aug. 28., 1923. 1 M57965 J. A. CAMERON ET AL v SL ITTING DEVICE Filed March 1 1919 2 Sheefs-She aet 2 In ventor:

Jkmes v5. fibmerom, Wasiaffl Eire/9;. W2 y- Patented Aug. 28, 1923.

BIRGER BIRCH,

T 1: hi FFEQE.

OF BROOKLYN, NEW YORK, ASSIGN- ORS TO CAMERON MACHINE COMPANY", OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

- SLITTING DEVICE.

Application filed larch 19, 1919.

The present invention relates generally toslitting devices such as are used, for dividing a web of flexible material into: sections. In devices of this character there is usually employed a cutter roll against which bears one or more cutting members, the cutter roll being of material harder than that of the cutting member. which is of the character commonly known as a scorecutter, the cutting edge of which is relatively blunt. It is. customary to drive the cutter roll, the score cutter, under pressure, bearing against it and rotating idly in engagement with it. The main object of this invention is to prevent the score cutter from wobbling uring the cutting action. plished by arranging the cutter on a pivotal support so that it has, with respect to 'the direction of rotation of the cutter roll, a trailing movemen Another feature of the. invention resides in a. construction whereby the, cutter structure maybe adjiisted, as a unit, lengthwise of the cutter roll without disturbing the adjustment of the spring that holds it against-the cutter roll. p I Other features, of' construction'will appear as the specification proceeds embodying the invention, partly in section and with elements broken away Figure 2 is a view of the device shown in Fig. 1 looking in the direction of arrow 2 and partly in section. v

The ,cutter roll 1 comprises an inner core 2 and an outer shell 3 that may, as shown, consist of several sleeve prt1ons. This cutter roll is suitably-driven asby means of pulley s or otherwise. rollis a rocking support 5 provided with a dovetail portion 6 which presents a flat sur face as shown in Fig.2. The 'cuttin member 7 consists here of a bracket 8 idabl supported upon the dovetail portion of New York,

7 its circumference ported at 23.

This is accom-- Adjacent the cutter Serial No. 283,497.

secured in position by 9. This bracket 8 is 10 into which extend holder 12 having a in which a score cutter 14 is rotatably mounted. The bracket 8 is also provided rovided with bearings pivots 11 of a cutter with a tail portion 15 which forms an. abutment member for a spring 16 that extends from the end of cutter holder 12, where it is secured byfla screw 17, to the screw 18 engaging "with the outer end of said tail portion 15. The rocking supportfi is provided with a handle 19 and carries 011'- a ratchet 20. 21 is a depivotally sup- This detent is normally 1nengagement with said ratchet by reason of tent carried by an arm 22 a counter-weight 24. and the ratchet and detent are released by the'depression of a treadle that forms part of arm 22.

I t will be seen that when rocking member I 5 is turned to the right in Fig. 1, score cutter 14 will be brought into engagement with means of a set screw bifurcated portion 13 1 cutter rolll and that after contact has been made between score cutter 14 and cutter roll 1 continued movement to the right (Fig. 1) of cause cutter holder.

the rocking member will 12 to turn in bearing 10 so that the rocking member may continue its movement toward the cutter roll.

This turning movement on center'll will increase the tension of spring 16. It will be understood that, owing to the fact that tail portion abutment for bracket 8; that a-unit, lengthwise of cutter roll 1; and that spring 16, is adjustable with a no parts, except the set screw Q' need be dislgure 1 is a side elevation of a devicerotation of cutterroll 1, of a similar line dsfawn between the center cutter roll 1 and the center of-rotation $26 of the score cutter. The resultis that the score cutter 15, which acts as an I,

the cutter may be adjusted, as r has what may be called a trailing move ment with respect to cutter roll 1, the effect of which is to counteract any tendency en the art ofscore cutter 14 tofwobble; This iso? the utmost importance in preventing slight inaccuracies in slitting due-to n1i mite yariationsin the parts; and it willbe understood that if the arrangement werere versed, the line between the center of roll 1 and the pivotal support 10 would be behind the line between the center of l and the piv- "otel center 26 and 110trailing action would take place. Consequently, any tendency of the score 'cutter to Wobble would be increased rather than reduced; The function of detent-21 is tohold theparts in the position to which they have been adjusted.

' We claim:

I A slitting device comprising: a cutter roll,

a rocking support in front of and below said iroin the cutter Leeeeee cuizer roll and having its axis parallel to the cutter roll a bracket adjustable on said rocking sunport in a direction parallel to the axis.

of tee cutter roll, a cutterholder supported on a pivot carried icy the" bracket parallel to cutter roll a score cutter engaging cutter roll and rotatably mounted on the extending outwardly and downwardly away roll, and a spin interposed between the cutterholder and t e tail portion, said spring extending substantially in the direction of said tail portion, and means for dirrectly placing said spring under tension Signed at the borough of Brooklyn, in the county of Kings city and State of New York, this 11th day 0i March, 1919.

JAMES A. CAMERON.

G UKETALF BERGER BIRCH.

hold-er, a tail portion, on tne bracket, 

